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Top Forums UNIX for Beginners Questions & Answers How to count the length of fasta sequences? Post 303033621 by RavinderSingh13 on Tuesday 9th of April 2019 08:49:54 AM
Old 04-09-2019
Quote:
Originally Posted by dineshkumarsrk
I could calculate the length of entire fasta sequences by following command,
Code:
awk '/^>/{if (l!="") print l; print; l=0; next}{l+=length($0)}END{print l}' unique.fasta

But, I need to calculate the length of a particular fasta sequence specified/listed in another txt file. The results to to be printed in a csv file.
Therefore, please help me to do the same.
Thanks in advance.
Sorry mate without seeing sample of Input and expected output it is NOT possible to tweak a solution. So kindly do add sample of your Input_file(fasta file) and show us expected output file(.csv one) in CODE TAGS and let us know then.

Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
 

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TFBS::PatternGen::SimplePFM(3pm)			User Contributed Perl Documentation			  TFBS::PatternGen::SimplePFM(3pm)

NAME
TFBS::PatternGen::SimplePFM - a simple position frequency matrix factory SYNOPSIS
my @sequences = qw( AAGCCT AGGCAT AAGCCT AAGCCT AGGCAT AGGCCT AGGCAT AGGTTT AGGCAT AGGCCT AGGCCT ); my $patterngen = TFBS::PatternGen::SimplePFM->new(-seq_list=>@sequences); my $pfm = $patterngen->pattern(); # $pfm is now a TFBS::Matrix::PFM object DESCRIPTION
TFBS::PatternGen::SimplePFM generates a position frequency matrix from a set of nucleotide sequences of equal length, The sequences can be passed either as strings, as Bio::Seq objects or as a fasta file. This pattern generator always creates only one pattern from a given set of sequences. new Title : new Usage : my $db = TFBS::PatternGen::SimplePFM->new(%args); Function: the constructor for the TFBS::PatternGen::SimplePFM object Returns : a TFBS::PatternGen::SimplePFM obkect Args : This method takes named arguments; you must specify one of the following -seq_list # a reference to an array of strings # and/or Bio::Seq objects # or -seq_stream # A Bio::SeqIO object # or -seq_file # the name of the fasta file containing # all the sequences pattern all_patterns patternSet The three above methods are used fro the retrieval of patterns, and are common to all TFBS::PatternGen::* classes. Please see TFBS::PatternGen for details. perl v5.14.2 2008-01-24 TFBS::PatternGen::SimplePFM(3pm)
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